The Transport Security Administration has just dropped a new warning about packing a common toiletry item.
Packing is probably the worst part about traveling by plane.
Not only do you have to consider the size and weight of your baggage as per whatever airline you're flying with, and probably shop for new, smaller items to adhere to the liquid rule, but it seems airports are constantly changing the rules and sparking confusion about what items can be packed into a carry-on compared to hand luggage.
Now, the TSA has added another item to its lengthy list of things fliers have to consider in their luggage.
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The Federal Aviation Administration says it comes down to devices containing lithium metal or lithium ion batteries, like cell phones, tablets and watches, as the tech runs the risk of overheating, expanding and ultimately erupting into flames.
Flight attendants can quickly respond to a lithium battery fire if it happens on the plane, providing they are made aware of it which is clearly a lot easier if the source of the fire is in the cabin as opposed to the hold with all the bags.
Some electric toothbrushes have lithium batteries installed, meaning they too with your other devices should be stowed in carry-on luggage.
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Other spare or uninstalled batteries must also come on board with you in hand luggage for the same reason.
Yet what might be surprising to learn is electronic toothbrushes are also included in that list and while they're technically allowed in both carry-on and checked luggage, the TSA dropped some additional 'special instructions' for how they can be transported safely this month.
If travelers want to check electric toothbrushes in their main luggage, 'they must be completely powered off and protected to prevent unintentional activation or damage,' the FFA said, as per USA Today.
The announcement comes as the TSA updated its rules this summer around popular hair styling tools, such as cordless curling irons and flat irons, which is banned from going into checked luggage.
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Again, this is because of the fire risk they pose, as the cordless beauty products tend to be powered by gas cartridges or butane.
The TSA has a complete alphabetical list of what can and can't travel with you in your carry on bags or checked bags, which makes for a surprising read.
Things like bear spray and cooking spray are straight up prohibited in both carry-on and checked luggage, and you can take a blender in your hand luggage - providing the blade has been removed.
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Electronic cigarettes and vapes are also only allowed in carry-on with passengers advised to take extra care to prevent 'accidental activation of the heating element of the device' when transporting it.
Department of Homeland Security Secretary Kristi Noem has reportedly also been pushing the TSA to lighten up on its strict liquids rule.
“The day I walked in the door, I started questioning everything TSA does,” Noem told NewsNation.
"I will tell you, I mean, the liquids [rule] I am questioning. So that may be the next big announcement is what size your liquids need to be. We’re looking at it.”